Apply the philosophical principles learned to analyze the following materials (introduction to the basic principles of Marxism)

Question 1: material 1 Thales and Ramat's views belong to the naive materialist view, which holds that matter is primary; But the depth of their understanding is different, which reflects the cognitive level of their time.

The views of two philosophers in Material 2 belong to subjective idealism. They think that consciousness is primary and everything comes from their own consciousness.

Question 2: Lenin's viewpoint belongs to dialectical materialism, and he thinks that matter is primary. Consciousness is the reflection of the material world, and material is an objective existence independent of consciousness. The emergence of dialectical materialism transcends all previous philosophies and breaks through the limitation that simple materialism is a materialist in natural science and a backward maintainer in grey science. At the same time, it absorbs the dialectical view of idealism philosophy, so that the existence of society can be reasonably explained at the material level. Put forward the concept of practice, deny the direct existence form of external nature, and make it the purpose of human beings-the essence of human existence. It is a systematic and scientific theoretical system.